Allied Telesis AT-S20 User Manual

◆

User’s Guide

Management Software

AT-S20

For use with the AT-3726XL, AT-3716XL, AT-3714FXL, AT-3726 and AT-3714F Switches

Version 3.1

PN 613-10773-00 Rev. C

CentreCom is a regist ered trademark of Allied Telesyn International, Corp. Netscape Navigator is a registered trademark of Netscape Communications Corporation. Ethernet is a registered trademark of

Xerox Corporation. All other product names, company names, logos or other designations mentioned herein are trademarks or registered trademarks of their respective owners.

Allied Telesyn International, Corp. reserves the right to make changes in specifications and other information contained in this document without prior written notice. The information provided herein is subject to change without notice. In no event shall Allied Telesyn International, Corp. be liable for any incidental, special, indirect, or consequential damages whatsoever, including but not limited to lost profits, arising out of or related to this manual or the information contained herein, even if Allied Telesyn International, Corp. has been advised of, known, or should have known, the possibility of such damages.

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Preface ...............................................................................................................................................................Preface-i

Purpose of This Guide .................................. ............................. ......................................................................Preface-i

How This Guide is Organized .....................................................................................................................Preface-ii

Document Conventions ..............................................................................................................................Preface-iii

Related Guides ...................................... ............................. .............................................................................Preface-vi

Chapter 1

Features, Menu Tree, and Defaults ......................................................................... .......................................1-1

Software Features ...................................................... ............................. .......................................................... ..........1-1

Switch Naming and Security Features.............................................................. ............................. ............... 1-3

Switch Default Settings .............................................................................................................................................1-4

Setting Switch Defaults ............................................................... ....................................................................... .......1-5

Menu Tree ..... ............................. ............................. ............................. ................................................ ..........................1-6

Chapter 2

Getting Started with Local and Remote Omega ......................................................................................2-1

Getting Started with Local Omega .......................................................................................................................2-1

Configuring Your Terminal Emulator Program......................................................................................... 2-1

Starting an Omega Session............................................................... ................................................................ 2-2

Entering an IP Address.............................................................................................................. ......................... 2-3

Quitting a Session................................... ............................................................................................................. 2-3

Remote Management Requirements .................. ............................. ....................................................................2-4

Managing Your Switch in a TCP/IP-based Network .......................... ............................. .................................2-4

TCP/IP with BootP or DHCP........................................................................................ ...................................... 2-4

TCP/IP without BootP......... ................................................................................................................................ 2-5

Non-TCP/IP Networks............................................................................................................. ............................ 2-5

Configuration Options.......... .......................................................................................................... ................... 2-5

iii

Table of Contents

Chapter 3

Getting Started With Browser Ma nagement .............................................................................................3-1

Browser Requirements ..............................................................................................................................................3-1

Starting a Browser Sessio n ................................ ............................. ............................. ...................................... .......3-2

Navigating Around the Switch ..................... ............................. ............................. ................................................3-3

Chapter 4

Configuration an d Administration ................................................................................................................4-1

Connecting to a Remote System ........................... ............................. ...................................................................4-3

Pinging a Remote System ............................................................................................................................ ............4-4

Enabling or Disabling a Port ............................. ............................. ....................................................... ...................4-5

Configuring IP Parameters ................... ....................................................................................................................4-6

Naming the Switch ............................................................................... ...................................................... ................4-8

Change/Delete the Switch Name...................... ......................................................................................... 4-10

Naming the Port ... ............................. ............................. ............................. .............................................................4-11

Changing or Deleting a Port Name................................................................................ ............................ 4-13

Assigning a Password to the Switch ................................. ............................. ............................. ......................4-14

Forgetting Your Password................................. ............................. ............................. ................... ............... 4-14

Enabling Store-and-forward or Cut-through (Fragment-Free) ......................................................... ...... 4-15

Enabling Auto-Negotiate/Half -Duplex/Full-Duplex ....................................................................................4-17

Enabling Transmit Pacing ........................................................................... ..........................................................4-18

Setting Up a VT100 ..................................................................................... .............................................................4-19

Setting Up a Generic (Dumb) Terminal..................................................................................................... 4-19

Setting Full-Duplex/ Half-Duplex Mode............................. ...................................................................... 4-19

Setting Baud Rates........................ ........................................................................................................... ........ 4-20

Setting Time Out Protection ................................... .............................................................................................4-21

Deleting a Previously Configured Time out Valu e................................................................................. 4-21

Enabling/Disabling Omega Access ................................................................................. ...................................4-22

Local Omega....................................................................................................................................................... 4-22

Remote Omega............................................................................ ...................................................................... 4-22

Web-based Omega....................................... ................................................................................. .................. 4-22

Enabling/Disabling Backpressure ............................................ ..........................................................................4-23

Performing Software Upgrades Via TFTP ........................................................................................................4-24

Conditions for Network Downloads via TFTP.......................................................................... ............... 4-24

Using TFTP........................................................................................................................................................... 4-24

Downloading from One Switch to Another................................................................... ......................... 4-25

Broadcast Updated Software to All Systems.......................................................................................... 4-26

Using XModem to Download.................................................................................. ..................................... 4-27

Configuring for Bridging ................................... ............................. ............................. ..........................................4-28

Configuring Spanning Tree Parameters................................................................................................... 4-29

Designating the Root Port............. ............................. ............................. ............................. ......................... 4-31

Selecting Global Configuration ........................... ............................. ...................................................................4-33

Enabling/Disabling Port Trunking ........................................................................ .............................................4-34

AT-S20 User’s Guide

Chapter 5

Virtual LAN Configuration ..................................................................................................................................5-1

Configuration Information................................................................................................................................ 5-5

Port Information................................................................................................................................................... 5-5

Adding a New VLAN............................................................................................................................................ 5-7

Port to VLAN Configuration.............................................................................................................................. 5-9

Deleting a Port from a VLAN or Changing Port’s VLAN Assignm ent.............................................. 5-10

Chapter 6

Monitoring .......................................................................... .......................................................................................6-1

Activity Monitor ...........................................................................................................................................................6-2

MAC Address Table ..................................................................................................................................... ................6-3

Show All MAC Addresses................................................................................................................................ ... 6-4

Show By Port MAC Addresses........................................................................................................... ............... 6-4

Get Port from MAC Address............................................................. ............................. ................................... 6-5

Static MAC Addresses ................................................................................................................................................6-6

Show All Static MAC Addresses.... ............................. ...................................................................................... 6-6

Show Per Port Static MAC Addresses............................................................................................................ 6-7

Delete/Add Static MAC Address..................................................................................................................... 6 -8

Add/Delete Static MAC Addresses and Selecting Ports for Multicasts............................................. 6-9

Clearing Static MAC Table.............................................. ................................................................................ 6-11

Locating Your Switch’s MAC Address........................................................................................................ 6-11

Security/Source Address Table ........................................ ............................. .......................................................6-12

Source Address Learning Mo de................................................................................................................... 6-13

Security Threshold............................................................................... ............................. .......................... ...... 6-15

Intruder Protection.................................................... ............................. ................................................. ......... 6-17

Setting Security/Source Address Table Options ...........................................................................................6-19

Setting Source Address Learning Mode................................................................................................... 6-19

Setting Security Threshold................................................................... ............................. ............................. 6-20

Setting Number of MAC Address................................................................................................................ 6-20

Setting Intruder Protection..................................................................... ............................. ......................... 6-21

Mirror Port ...................................................................................................................................................................6-23

Port Status ...................................................................................................................................................................6-25

Port Numbering ............................. ....................................................................................................... ....................6-26

Statistics: Received and Transmitted Ethernet Frames ...............................................................................6-28

Viewing Switch Statistics.......................................................................................................... ...................... 6-28

Viewing Port Statistics........................................................... ............................. ............................................. 6-33

Interpreting the Graphs.................................................................................................................................. 6-34

Using the Graphs as a Monitoring and Diagnostics Tool................................................................... 6-35

Table of Contents

Chapter 7

Diagnostics ................................................................................................................................................................7-1

Resetting the Switch ..................................................................................................................................................7-2

To Reset the Switch.................................................................................... ......................................................... 7-2

Running Diagnostics ............................................................................... ...................................................................7-3

Getting Help ................. ................................................................................................................. ................................7-4

Resetting Statistics Counters ..................................................................................................................................7-5

To Reset Switch (System) Counters............................................................................................................... 7-5

AppendixA

Spanning Tree Protocol ......................................................................................................................................A-1

Concepts ....................................................................................................................................................................... A-1

Features.............................................................................................................................. .................................... A-2

Parameters............................................................................................................................................................ A-2

Operations..................................................... ............................. ........................................................................... A-3

Index ....................................................................................................................................................................Index-1

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The purpose of this guide is to instruct network administrators on how to manage their switch by using the Omega management software to configure and monitor the device. By using the Omega software, a network administrator can manage the switch in several ways:

❑

Remotely

❑

Locally

❑

Web-based

Network administrators should be familiar with Ethernet switches, bridging, and the spanning tree protoc ol.

Preface-i

How This Guide is Organized

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This guide is composed of the following sections: Chapter1, Features, Menu Tree, and Defaults, which presents the

major switch features, a menu tree that displays the primary and secondary menus, and a list of switch defaults in tabular form.

Chapter2, Getting Started with Local and Remote Omega, provides instructions on how to set up the switch for remotely or locally managing the switch.

Chapter3, Getting Started With Browser Management, provides instructions on how to use a browser to manage the switch.

Chapter4, Configuration and Administration, describes the management tasks according to switch, configuration, port configuration and administration.

Chapter5, Virtual LAN Configuration, provides a brief discussion of Allied T elesyn’s implementation of VLANs.

Chapter6, Monitoring, describes the tasks related to monitoring the switch.

Chapter7, Diagnostics, describes the testing procedures using the Omega menus.

AppendixA, Spanning Tree Protocol, provides a brief explanation of Spanning Tree Algorithm and its use with the switch

At the end of this guide is an Index according to subject matter.

Preface-ii

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The conventions used in this guide are as follows:

To select an option Highlight the option by pressing the Up

AT-S20 User’s Guide

❑

For DEC VT100 or ANSI (the default) terminal configuration:

When directed You must

(↑) or Down (↓) arrow key; then press

RETURN

or Type the first character of the option you

want at the prompt and then press RETURN.

If two or more options have matching initial characters, type the first characters enough times until the option you want is highlighted; then press RETURN.

To enter information, for example, IP address

To return to the previous

Type the correct IP address and press

RETURN

Select the option

screen (Omega only)

or Press ESC

To return to the previous

Select the Back button

screen (Browser) To return to Main Menu

(Omega) To return to Main Menu

Highlight Return to Main menu... and then press RETURN

Select the Main Menu icon.

(Browser)

All procedures in this guide are based on the default terminal configuration.

Preface-iii

Document Conventions

❑

For generic (dumb terminal) terminal configuration:

When directed You must

To select an option Type the first character of the option you

want and then press RETURN. If two or more options hav e mat ching initial

characters, type enough characters for Omega to distinguish your choice from the other options; then press RETURN. To guide you, the characters you must type are in uppercase.

For example:

Mirroring configu ration MAC Address Table

If options on a list are preceded by numbers (1:, 2:, 3:, etc.), type the number corresponding to your choic e a t the pr o mpt; then press RETURN.

To enter information, for example, IP address

To return to the previous screen

❑

Selecting a configuration: Omega denotes a def ault configur ation by preced ing it with a

>. For example, DEC VT100 configuration is shown to be the terminal type in the following screen:

> VT100-compatible / ANSI

Generic dumb terminal

Type the correct IP address at the prompt and press RETURN.

Press RETURN after making an entry.

Preface-iv

AT-S20 User’s Guide

Warning

Caution

VT100-compatible / ANSI

> Generic dumb terminal

The default selection in a DEC VT100 terminal configuration also appears darker. If you change the option, Omega changes the user interface by moving the > to the new selection. For example:

❑

Selecting menu options: Menus and submenus are in courier type. Menu hierarchies

are separated by a >. Menu: Menu:

❑

Entering variables:

Administration Administration>IP parameters

Variables are information you must supply, as in IP addresses, MAC addresses, or port numbers. Variables are enclosed in angle brackets (<>).

For example, to configure a specific port: Select

Port status and

configuration><PortNumber>

where

can be Port 1, or 2, and so on.

Note

A note provides additional information.

A warning informs you that performing or omitting a specific action may result to bodily injury.

A caution informs you that performing or omitting a specific action may result to equipment damage or loss of data.

Preface-v

Related Guides

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Allied Telesyn wants our customers to be well informed b y pr ov iding the most up- t o- date and easily ac c ess ib le g uid e s an d othe r te c hn ical information.

Visit our website at: www.alliedtelesyn.com and download the following guide:

AT-3726XL, AT-3716XL, AT-3714FXL Installation Guide, 613-10766-00

AT-3726, AT-3714F Installation Guide, 613-10708-00

The following guides are shipped with the product:

AT-3726XL and AT-3716XL Quick Install Guide, 613-10769-00

AT-3726XL and AT-371 6XL T rans lated Sa fety I nformati on Booklet, 613-10768-00

AT-3714FXL Quick Install Guide,

613-10767-00 AT-3714FXL Translated Safety Informatio n B ooklet,

613-10770-00 AT-A10, AT-A11 Quick Install Guide,

613-10742-00 AT-3726 Quick Install Guide,

613-10668-00 AT-3726 Translated Safety Information Booklet,

PN 613-10673-00 AT-3714F Quick Install Guide,

613-10707-00 AT-3714F Translated Safety Information Booklet,

PN 613-10717-00

Preface-vi

AT-3701, AT-3701F/SC Quick Install Guide, 613-10669-00

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The switches have the following major software management features:

❑

Supports industry-standard 802.1Q VLAN tagging and supports a maximum of 32 port-based and tag-based VLANs (XL versions only)

❑

Security (XL versions only)

❑

Backpressure (XL versions only) and transmit pacing provide one-way flow control to relieve congested networks

❑

Port mirroring

❑

Firmware is factory-installed and ready to use

❑

User configuration for store-and-forward and cut-through packet switching for non-XL versions; store and forward only for XL versions

❑

Auto-negotiation on 10 Mbps and 10/100 Mbps UTP ports in compliance with IEEE 802.3u

❑

Mulitcast address support which allows users to specify the recipient port for multicast packets

❑

All UTP and fiber ports are software configurable for full- and half-duplex

❑

Port B (optional uplink) can be configured as either a 10/100 Mbps UTP or a 100 Mbps fiber uplink

1-1

Software Features

❑

Port Trunking allows configuring of Ports A and B to function as a single uplink port which effectively increases the throughput of the connection.

❑

Spanning Tree Protocol (STP) support

❑

System configuration, management, and diagnostics using Allied Telesyn’s

Omega interface

, accessible locally via an RS232 asynchronous terminal port, remotely via Telnet, or a web browser.

❑

Software upgrades using Xmodem via the RS232 port or TFTP to download software to switches on the network

❑

Broadcast software from a switch to one or all switches on the network

❑

Web-based management

❑

SNMP agent that allows the switch management from the user’s network management station

❑

Support for BootP and Dynamic Host Configuration Protocol (DHCP) for IP parameters

❑

Support for DEC VT100/ANSI (the default), or generic (dumb) terminal configuration

❑

Internet Control Message Protocol (ICMP) Echo PING support

❑

Domain name service support (DNS)

1-2

AT-S20 User’s Guide

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The switch provides configurable options for customizing for example,

❑

Naming the switch and its ports Names are more descriptive and easier to remember than

addresses. Port names can be associated with the user assigned to the

port or an office location. The need to use symbolic names becomes more apparent as you add more switches and therefore multiply the number of ports you must manage.

❑

Enabling security features Although passwords are not required to access the

management menus, with the Omega Options menu, you can prevent (disable) either Local Omega, Remote Omega, or webbased Omega, create password protection, and enable timeout.

A timeout value automatically terminates a management session after a given period when someone leaves a current session unattended.

1-3

Switch Default Settings

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Table 1-1 lists the switch default settings.

Table 1-1

Switch Default Settings

Settings Default

IP Address 0.0.0.0 Subnet Mask 0.0.0.0 Gateway Address 0.0.0.0 Get community string public Set community string private Trap community string public Port mirroring st ate Disabled Spanning Tree Protocol Disabled Omega Access Enabled System Name None Password (Omega) No password assig n ed Download Password ATS20 Port Priority 128 Port Path Cost 100 (AT-3726) Auto-negotiate, Full-duplex or Half-duplex (per port) Auto-negotiate (AT-3726XL,AT-3726,

AT-3716XL)

Half-duplex (AT-3714FXL, AT-3714F) Spanning Tree Priority 32768 Maximum Aging Time 20 seconds Forwarding Delay 15 Hello Time 2 seconds Transmit Pacing/Backpressure Disabled Bridge Identifier (STP) 32768 (bridge priority) Port Priority (STP) 128 Port Cost (STP) 100 for 10 Mbps ports

10 for 100 Mbps ports Domain Name None Timeout Value 5 minutes Default VLAN Name Default VLAN

1-4

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Warning

To set your switch to the factory defaults, do the following:

This operation deletes existing switch configurations.

1. Attach a terminal or PC to the RS232 port located on the front

2. Press RESET located on the right side of the switch’s front panel.

AT-S20 User’s Guide

panel of the switch and start the terminal emulation program.

3. Immediately press any key when you see

diagnostics or to reload system software

Hit any key to run

A menu

then displays.

4. Select D from the menu. The following warning message displays:

WARNING: This will erase all current configuration data!

Continue? Y/N

5. Select Y. The system displays:

been reset to factory default values

All configuration data has

6. Press B to boot the switch software.

1-5

Menu Tree

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The following illustration shows the Omega Menu tree.

Port status and

configuration

Enable this port Disable (partition) this port

Auto negotiate Full duplex Half duplex

Store-and-forward Cut-through

Transmit pacing enable No transmit pacing

Global config

Port name

(fragment-free)1

Ethernet statistics

Receive Good Frames

Filtered Frames

Broadcasts

Multicasts

CRC Errors

Alignment Errors

Undersized Frames

Fragments

Long Frames

Transmit Statistics

Individual port overview

Administration

Update software in another sytem

Broadcast updated software to all systems

XModem software update to this system

Connect to a remote system

Ping a remote system

Activity monitor

Diagnostics

Reset and restart the system

System

Configuration

System name

Default VLAN Aging Time

Omega Options

IP Parameters

Security/Source Address T able

Terminal configuration

Back pressure

Port T runking

1. For non-XL versions only

2. For XL versions only

RMON Statistics

Port RMON Statistics

Zero all statistics counters on the entire system

Figure1-1

Omega Menu Tree (1 of 2)

1-6

AT-S20 User’s Guide

Traffic/Port

Mirroring

Enabled

Disabled

3. For XL versions only

Virtual LAN

Virtual LAN definitions

Port to VLAN configuration

Bridge

Figure1-2

Spanning tree parameters

Port spanning tree configuration

Omega Menu Tree (2 of 2)

MAC Address

Show all MAC addresses

By port MAC addresses

Get Port From MAC Address

All static MAC addresses

Per port static MAC addresses

Multicast addresses

Clear static MAC table

1-7

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To locally managing your switch, simply connect a terminal or PC directly to the switch’s RS232 port to access the Omega menus. See the following sections.

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To set the terminal emulator program, do the following:

1. Access the terminal emulator program on your PC (VT100) and set the following:

❑

Data bits to 8

❑

Stop bits to 1

❑

Parity to None

❑

Full-duplex (using straight-through cable)

❑

Autobaud

Note

The diagnostics that run during the system boot output only at 9600 bps. Therefore, Allied Telesyn recommends this speed setting.

2. Press <Return> several times to ensure baud autoconfiguration.

2-1

Getting Started with Local Omega

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Once you have established a connection to the switch, the Omega Main Menu displays.

The banner reflects the name of your switch. This example shows that the AT-3714FXL switch is operating and the switch name is Accounting.

Omega Main Menu (AT-3714FXL)

from the main menu, the

By selecting

Figure 2-1

System Configuration

following screen displays. The default settings are always in bold print on the screen.

(

Figure2-2

)

System Conf iguration Menu

2-2

AT-S20 User’s Guide

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If you have a T CP/IP network but do not ha v e a BootP server, or DHCP server, you must enter an IP address and subnet mask for the switch through Omega.

1. Select

System administration IP Parameters

from the

Main Menu.

2. Select

3. Select

4. Select

IP address Subnet mask

and enter a unique IP address for the switch.

and enter the switch’s subnet mask.

Gateway address

and enter the address if you are sending packets to another IP network. The gateway address is the router that can forward packets to the other IP networks.

Once the switch has an IP address, you may initiate Omega sessions to it via Telnet. Note that you can only have one Telnet session operating at any one time. The session can be either inbound or outbound. If you have an inbound session to Omega, you do not have the option of starting a new session (outbound connection). Therefore, if you are already using Telnet, the Omega option

Connect to a remote system

will not be available (described

in detail in Chapter 4, Connecting to a Remote System on page 4-

3). In addition, a local RS232 connection blocks a Telnet session and vice versa.

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Note

For non-IP environments, you can use MAC addresses to connect to remote Allied Telesyn switches only if there are no routers between the two switches. If you have assigned unique names, you may use these also.

Select accessed the switch through the network, selecting

Quit

from the Main Menu to terminate the session. If you

Quit

also cuts

the connection. It is important to select

Quit

when you are done with Omega; otherwise, you may block other remote sessions, local sessions, or software downloads. To avoid possible lockouts, see Setting Time Out Protect i o n on page 4-21.

Note

After you have configured your switch using the Omega management software, you must quit the session and disconnect the RS232 cable.

2-3

Remote Management Requirements

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Y ou can remotely manage your switch, but first you must have one of the following:

❑

The switch’s pre-configured MAC address (located below the RS232 Terminal Port label on the switch’s front panel

❑

A unique IP address if you use TCP/IP (by either assigning one to the remote switch or by having your BootP/DHCP server provide the needed parameters

❑

A unique name for the switch that you assign via Omega (see Naming the Switch on page 4-8.

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To manage the switch in a TCP/IP based network, you must first:

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❑

Configure the switch’s IP parameters, or

❑

Automatically get an IP address via BootP or DHCP

Note

You do have the option to manage the switch using either SNMP or Omega Remote, via Telnet or web browser.

The function of the BootP utility within an IP server is to enter an IP address into the switch. Whenever you reset or power on/off the switch, the switch transmits a request packet to the server every three seconds to obtain the required IP parameters. (The BootP utility and the DHCP both make three attempts each.)

If the requesting switch does not receive a BootP or DHCP response after the third request, it will operate with a computed pseudo IP address based on the switch’s MAC address for Allied Telesyn switchto-switch communication, i.e., downloads.

If the switch receives a BootP or DHCP response, it extracts the IP address, Subnet Mask, and Gateway/Router address from the response packet and uses these parameters to configure itself until the next power-on or reset. Additionally, if the BootP response packet specifies a filename and a TFTP host address, then the switch sends a TFTP “get” request to the specified host using the specified filename. This initiates a TFTP download of operating software and allows you to maintain the downloaded server software.

2-4

AT-S20 User’s Guide

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To manage the switch using SNMP, Telnet or web browser, you must at least enter the IP address and subnet mask using the Omega menus.

T o manage your switch on a non-TCP/IP network, you need to locally connect to one switch in the segment (see Configuration Options on page 2-5). You can then connect to other segments on the same segment using the techniques described in Chapter 4, Connecting to a Remote System.

Note

You cannot manage the switch using a web browser without configuring TCP /IP information.

Network administrators can use the configurable options for their individualized switch performance. For example:

❑

Name the switch and its ports Names are more descriptive and easier to remember than

addresses. Port names can be associated with the user assigned to the

port or an office location. The need to use symbolic names becomes more apparent as you add more switches and therefore multiply the number of ports you must manage.

❑

Enable security features Although passwords are not required to access the

management menus, with the Omega Options Menu, you can prevent (disable) either Local Omega, Remote Omega, or webbased Omega, create password protection, and enable timeout.

A timeout value automatically terminates a management session after a given period when someone leaves a current session unattended.

Proceed to Chapter4, Configura t io n an d Admi n is tr at i o n and Chapter 6, Monitoring.

2-5

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To use AT-S20 software via a browser, you need the following:

❑

A computer connected to any network port

❑

A Web browser, such as Netscape Navigator®, installed on the computer

❑

The IP address of the switch (see Chapter2, Confi guration Options)

Note

While only one local or remote Omega session can be opened, there can be multiple web-based sessions opened at any time.

3-1

Starting a Browser Session

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To access the switch using your browser, do the following:

1. If your network is using a proxy server, you will need to make exceptions for the switches that you want to manage. Refer to the documentation provided with your web browser.

At minimum, you must have Netscape version 3.0 or any other industry-standard browser to manage the switch via a browser.

2. At the Universal Resource Locator (URL) prompt, enter the switch’s IP address. The following screen is displayed.

Note

3-2

Note

For easy access, you may want to bookmark the URL for the switches you access frequently.

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The switch’s front panel is active. You can click anywhere on the switch and a menu or table displays. For example, if you click Port 15, that port’s settings appear, as shown in Figure3-1.

AT-S20 User’s Guide

Figure3-1

Port 15 Sett ings

3-3

Navigating Around the Switch

If you click any other area other than a specified port on the switch’s front panel, the following table displays.

Figure3-2

Port Link, Status, and Mode States

You also can click on the Omega Main Menu. You are now ready to configure your switch. See Chapter 4,

Configuration and Administ ratio n .

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